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Pie chart - plot functions:
The MATLAB also has a function pie which will generate a pie chart. Calling the function with the form pie (vec) draws a pie chart, by using the percentage of each element of vec of the entire (the sum). It shows these beginning from the top of the circle and going around counter-clockwise. For illustration, the first value in the vector [3 10 5 2] , 3, is 15% of the sum, 10 is 50% of the sum, and so on, as shown in figure.
>> pie ([3 10 5 2])
Also a cell array of labels can be passed to the pie function; such labels will appear rather than the percentages as shown in figure.
>> pie([3 10 5 2], {'A','B','C','D'})
Function isreal - complex numbers: The function isreal returns 1 for logical true when there is no imaginary part of the argument, or 0 for false when the argument does have a
Illustration of Minimum and Maximum Value Both of these functions also return the index of the minimum or maximum value; when there is more than one occurrence, it returns the
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5 p2+8p+15, 3 p2-3p-18, 12 p2-p-30
Function fopen - file function: The permission string in the call to the fopen function identifies that the file is opened for writing to it. Just as when reading from a file,
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Illustration of Variance For illustration, for the vector [4, 6, 1, 5], there are n = 4 values therefore n - 1 is 3. The mean of this data set is also 4. The variance will be
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